Cushion|Natural|GIA

1.51ct D SI2 Cushion Natural Diamond

EX • D/SI2 • GIA 6555141851

Certificate GIA 6555141851

Diamond specifications and retailer prices

From $4,159 USD
As of October 30, 2026
Save $3,476 USD (46%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $7,635 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555141851. Listed at 8 retailers as of October 29, 2026, with prices from $4,159 to $7,635, a $3,476 spread on the same certified stone. MOH London lists it at $7,635. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
D
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6555141851
Dimensions7.82 × 5.90 × 3.95 mm
L/W Ratio1.33
Top View
7.82 mm5.90 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6555141851
Side View
Table 57.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 66.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $7,635 USD|Low: $3,621 USD|High: $8,336 USD|Avg: $5,023 USD|-8.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 7$4,159 USD
Retailer 2$4,182 USD
Retailer 5$4,316 USD
Retailer 8$4,402 USD
Retailer 4$4,507 USD
Retailer 6$4,532 USD
Retailer 3$4,742 USD
Retailer 9$5,074 USD
MOH London$7,635 USD

46 data points across 9 retailers

8 retailers$4,159 USD to $7,635 USD

A
Cheapest Retailer
-
$4,159 USD
A
Retailer 2
-
$4,182 USD
₹398,259 INR
View
A
Retailer 3
-
$4,316 USD
A$6,641 AUD
View
A
Retailer 4
-
$4,402 USD
View
Final sale: no returns
A
Retailer 5
-
$4,507 USD
£3,549 GBP
View
A
Retailer 6
-
$4,532 USD
View
A
Retailer 7
-
$4,742 USD
£3,734 GBP
View
Most Expensive
B+
MOH London
FD5D29FA0 · Oct 29
$7,635 USD
£6,012 GBP
View
7 more retailers have this diamond
Prices start from $4,159 USDSave up to $3,476 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.51ct Cushion
$4,159 USD